Question

7 To find out the concentration of So, in the air (in parts per million, i.e., ppm), the data
was collected for 30 localities in a certain city and is presented below:
Concentration of So, in ppm)
Frequency
0.00 - 0.04
4
0.04 - 0.08
9
0.08 - 0.12
9
0.12 - 0.16
2
0899
0.16 - 0.20
4
0.20 - 0.24
2
Find the mean concentration of So, in the air.​

Answer 1

Answer:

0.20_0,24

frequency is the above in the answer

Answer 2

Step-by-step explanation:

refer to the attachment.

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